#include<stdio.h>
#include<stdlib.h>
#include<string.h>

  int main(){
  const char* user = getenv("USER");

  if(strcmp(user,"fwx")==0 ){
    printf("1\n%s\n",user);
  }else{
    printf("no\n%s\n",user);
  }











  
  //int g_unval;
  //int g_val = 100;
  //
  //int main(int argc, char *argv[], char *env[])
  //{
  //const char *str = "helloworld";
  //printf("code addr: %p\n", main);
  //printf("init global addr: %p\n", &g_val);
  //printf("uninit global addr: %p\n", &g_unval);
  //static int test = 10;
  //char *heap_mem = (char*)malloc(10);
  //char *heap_mem1 = (char*)malloc(10);
  //char *heap_mem2 = (char*)malloc(10);
  //char *heap_mem3 = (char*)malloc(10);
  //printf("heap addr: %p\n", heap_mem); //heap_mem(0), &heap_mem(1)
  //printf("heap addr: %p\n", heap_mem1); //heap_mem(0), &heap_mem(1)
  //printf("heap addr: %p\n", heap_mem2); //heap_mem(0), &heap_mem(1)
  //printf("heap addr: %p\n", heap_mem3); //heap_mem(0), &heap_mem(1)
  //printf("test static addr: %p\n", &test); //heap_mem(0), &heap_mem(1)
  //printf("stack addr: %p\n", &heap_mem); //heap_mem(0), &heap_mem(1)
  //printf("stack addr: %p\n", &heap_mem1); //heap_mem(0), &heap_mem(1)
  //printf("stack addr: %p\n", &heap_mem2); //heap_mem(0), &heap_mem(1)
  //printf("stack addr: %p\n", &heap_mem3); //heap_mem(0), &heap_mem(1)
  //printf("read only string addr: %p\n", str);
  //for(int i = 0 ;i < argc; i++)
  //{
  //printf("argv[%d]: %p\n", i, argv[i]);
  //}
  //for(int i = 0; env[i]; i++)
  //{
  //printf("env[%d]: %p\n", i, env[i]);
  //} 
  return 0;
}
  
  
  //  (void)argc;
//  (void)argv;
//  printf("%s\n",getenv("MYENV"));
//  
  
  
  // extern char** environ;
//  for(int i = 0; environ[i]; i++)
//    printf("%s\n",environ[i]);

